FULS2688
SHAFT, MAIN
Navistar International®

The main shaft is a critical component in the transmission system, responsible for transferring power from the engine to the wheels. This part is engineered with precision to ensure optimal performance and durability under various driving conditions. The main shaft is constructed from high-quality materials that resist wear and tear, providing longevity and reliability. Its design includes specific features that enhance its functionality, such as precision machining for a perfect fit and smooth operation. This ensures that the vehicle operates efficiently, reducing friction and improving overall performance. The main shaft plays a vital role in maintaining the integrity of the transmission system, making it essential for smooth gear shifts and effective power delivery.

Navistar International Corporation has long been a leader in the automotive industry, known for its commitment to producing high-quality components that enhance vehicle performance. The main shaft is a critical part of the transmission system, responsible for transferring power from the engine to the wheels. Engineered with precision, this component ensures optimal performance and durability under various driving conditions. Constructed from high-quality materials, the main shaft is designed to resist wear and tear, providing longevity and reliability. Its design includes specific features that enhance functionality, ensuring that the vehicle operates efficiently and smoothly. Navistar's expertise in creating dependable components is evident in this essential part of the transmission system.

This part fits the following Navistar models:

• - 8000 Heavy Tractors (from 1/1/1989 to 1/16/1998)
• - 7400 Severe Service Trucks (built on or after 7/1/01)
• - HX Heavy Extreme
• - 9300 Premium Conventional
• - 7300 Severe Service Trucks (built on or after 10/1/01)
• - PROL PROSTAR Linehaul Conventional Limited
• - 8500 Heavy Tractors
• - 9700 Premium Cabover
• - 5600I Severe Service Conventional
• - 8100 Heavy Tractors (built on or after 1/16/98)
• - PROP PROSTAR Linehaul Conventional Premium
• - 4900 Medium Trucks (built on or after 5/23/97)
• - 9800 Premium Cabover
• - 513 MT-513 Transmission
• - 7600 Severe Service Trucks (built on or after 4/1/02)
• - HVHD Heavy Duty Engines
• - 5000 Severe Service Conventional (after 3/15/96)
• - 5500I Severe Service Conventional
• - HVMD Medium Duty Engines
• - 8600 Heavy Tractors
• - 7500 Severe Service Trucks (built on or after 7/1/01)
• - 7700 Severe Service Trucks (built on or after 12/15/03)
• - 4400 Medium Trucks
• - 9200 Premium Conventional
• - TG01 LoneStar Linehaul Conventional
• - 5900I Severe Service Conventional
• - 9100 Premium Conventional
• - PROSTAR Linehaul Conventional
• - 5070 Severe Service (built 1/1/1992 thru 3/14/1996)
• - 9400 Premium Conventional (after 3/15/96)
• - 9900 Premium Conventional (built on or after 3/15/96)
• - 2500 Heavy Service Trucks (built on or after 1/16/98)

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